Feat v0.7.6 code hygiene (#60)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

server/database/migrations/sqlite/009_ha.sql

@@ -1,6 +1,7 @@
 -- ==========================================
 -- Armature — 009 Multi-Replica HA (SQLite)
 -- ==========================================
+-- Note: migration 008 was merged into 007 during pre-1.0 schema consolidation.
 
 CREATE TABLE IF NOT EXISTS ws_tickets (
     id         TEXT PRIMARY KEY,

server/database/migrations/sqlite/013_cluster_registry.sql

@@ -0,0 +1,7 @@
+-- 013_cluster_registry.sql — placeholder
+-- Postgres-only migration: creates UNLOGGED node_registry table for
+-- cluster self-assembly (v0.6.0). SQLite deployments are single-node
+-- and do not use the cluster registry. This placeholder aligns the
+-- migration numbering between dialects.
+--
+-- See postgres/013_cluster_registry.sql for the actual schema.

server/database/migrations/sqlite/014_test_runner_type.sql

@@ -1,4 +1,4 @@
--- 013_test_runner_type.sql — v0.7.1
+-- 014_test_runner_type.sql — v0.7.1
 -- Adds 'test-runner' to the packages.type CHECK constraint.
 -- SQLite doesn't support ALTER CHECK — must recreate the table.